CN204085437U

CN204085437U - Point machine indication rod gap width on-line real time monitoring system

Info

Publication number: CN204085437U
Application number: CN201420519912.5U
Authority: CN
Inventors: 张长生; 王予平; 赵建明; 吴旺生; 陈志雄; 魏涛; 刘玉玲
Original assignee: China Railway Signal and Communication Shanghai Engineering Bureau Group Co Ltd
Current assignee: SHANGHAI XINHAI XINTONG INFORMATION TECHNOLOGY CO., LTD.
Priority date: 2014-09-11
Filing date: 2014-09-11
Publication date: 2015-01-07
Anticipated expiration: 2024-09-11

Abstract

The utility model discloses a kind of point machine indication rod gap width on-line real time monitoring system, comprises current vortex sensor, collector, Centralizing inspection manager, remote monitoring center.Current vortex sensor comprises eddy current probe, current vortex circuit; Eddy current probe, by checking post and checking that the gap between block breach converts current vortex signal to, exports after current vortex processing of circuit; The data that collector exports in order to gather current vortex sensor; Centralizing inspection manager connects collector by line of electric force, receives in power carrier mode the data that collector collects; Remote monitoring center connects one or more Centralizing inspection manager, receives the data that Centralizing inspection manager sends.The utility model can improve system stability, reliability, make wrong report, rate of failing to report is down to zero, current vortex sensor reliable long-term working is good, highly sensitive simultaneously, resolution is high, fast response time, interference resistance are strong, is applicable to various goat and can uses under circumstances.

Description

Point machine indication rod gap width on-line real time monitoring system

Technical field

The utility model belongs to Remote Monitoring Technology field, relates to a kind of monitoring system, particularly relates to a kind of railway switch machine indication rod gap width on-line real time monitoring system.

Background technology

Whether normal the duty of railway switch machine is normally runs most important to guarantee railway, the research of railway switch machine working state monitoring is never interrupted for over ten years, domestic and international major parameter of monitoring goat duty is conversion resistance force and indication rod gap width at present, wherein conversion resistance force is the indirect performance of goat switch point housing degree, and indication rod gap width is the direct performance of goat switch point housing degree.

The monitoring mode of existing indication rod gap width all has its weak point: as collision bead type sensor technology and spring displacement sensor technical approach sniffer fragile, photoelectric encoder technical approach vulnerable to pollution and reduce accuracy, reflective optical fiber displacement sensor technology and the excessive inconvenience of hall displacement transducer technical approach probe are installed, and camera technical approach does not quantize testing result needs artificial judgment indication rod gap width.

Meanwhile, existing data acquisition modes generally cannot realize the real-time Transmission of data, normally stores data on the storage card of collecting device, and then by manually accessing, efficiency is low, real-time is not enough.

In addition, existing monitoring mode normally stores data in monitoring center, is shown by the display screen of monitoring center, cannot obtain the gap data real-time monitored in arbitrary place.

In view of this, in the urgent need to designing a kind of new point machine indication rod gap width monitoring system, to overcome the above-mentioned defect of existing system.

Utility model content

Technical problem to be solved in the utility model is: provide a kind of point machine indication rod gap width on-line real time monitoring system, can real time on-line monitoring railway switch machine indication rod breach, and reliability is high.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of point machine indication rod gap width on-line real time monitoring system, described monitoring system comprises:

Current vortex sensor, comprises eddy current probe, current vortex circuit; Described eddy current probe, by checking post and checking that the gap between block breach converts current vortex signal to, exports after current vortex processing of circuit;

Collector, connects one or more current vortex sensor, in order to gather the data that affiliated current vortex sensor exports;

Centralizing inspection manager, connects one or more collector by line of electric force, receives in power carrier mode the data that collector collects;

Remote monitoring center, connects one or more Centralizing inspection manager, receives the data that described Centralizing inspection manager sends.

As a kind of preferred version of the present utility model, described collector comprises first microprocessor, the first wireless communication module, the first data memory module, A/D acquisition module, the first power line carrier module, the first power module;

Described first wireless communication module, the first data memory module, A/D acquisition module, the first power line carrier module, the first power module are connected with described first microprocessor respectively;

Described first power line carrier module connects Centralizing inspection manager, and described A/D acquisition module connects current vortex sensor.

As a kind of preferred version of the present utility model, described Centralizing inspection manager comprises the second microprocessor, the second data memory module, the second power line carrier module, second source module, second communication module, liquid crystal serial communication modular, centralized displaying screen;

Described second data memory module, the second power line carrier module, second source module, second communication module, liquid crystal serial communication modular are connected with the second microprocessor respectively, and liquid crystal serial communication modular is also connected with centralized displaying screen;

Described Centralizing inspection manager connects remote monitoring center by second communication module, connects collector by the second power line carrier module.

As a kind of preferred version of the present utility model, described second communication module comprises RS485 serial port unit, RS422 serial port unit, tcp/ip communication unit.

As a kind of preferred version of the present utility model, described monitoring system also comprises one or more wireless handset, and wireless handset is provided with the 3rd wireless communication module, connects described collector by the 3rd wireless communication module, obtains the data that collector gathers.Can show in real time nick translation change, can goat new clothes, replacing, maintenance, repair, patrol and examine time ancillary staff adjust notch state.Also send control command by its load module to collector, management collector simultaneously.

As a kind of preferred version of the present utility model, described wireless handset comprises the 3rd microprocessor, the 3rd data memory module, the 3rd wireless communication module, the 3rd LCD MODULE, the 3rd power module, input through keyboard module;

Described 3rd data memory module, the 3rd wireless communication module, the 3rd LCD MODULE, the 3rd power module, input through keyboard module are connected with the 3rd microprocessor respectively.

As a preferred embodiment of the present invention, described current vortex sensor comprises: eddy current probe, current vortex circuit, and described eddy current probe is connected with current vortex circuit; Current vortex circuit comprises oscillator module, detection module, temperature compensation module, output buffer stage block;

Described current vortex sensor utilizes high frequency oscillating current to pass through eddy current probe, the magnetic field of alternation is produced at the head of eddy current probe, in the effective range of this alternating magnetic field, there is metallic conductor to move, magnetic field can be moved change with metal and change, thus this change is converted to voltage or curent change and be delivered to the collector module of monitoring system;

Described oscillator module is responsible for producing oscillator signal, and outputs to detection module; When receiving eddy current probe due to after metallic conductor moves the changes of magnetic field of generation, the alternating voltage amplitude of output is made to produce corresponding change;

Described detection module becomes galvanic current to press signal in order to the ac voltage signal rectifying and wave-filtering exported by oscillator module;

Described temperature compensation module in order on due to temperature variation on current vortex sensor or/and oscillator module produce impact compensate;

Described output buffer stage block exports in order to be amplified by the d. c. voltage signal of upper level.

As a preferred embodiment of the present invention, described eddy current probe adopts the coil around wide temperature FERRITE CORE;

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprise the first resistance R1, the second resistance R2, the 3rd resistance R3, the 9th resistance R9, the tenth resistance R10, first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 7th electric capacity C7, the 8th electric capacity C8, amplifying triode Q1, and eddy current coil L1; Wherein, the first end of the 7th electric capacity C7 connects power vd D, the second end ground connection; The first end of the 8th electric capacity C8 connects power vd D by the 9th resistance R9, the second end ground connection; The first end of the first resistance R1 connects power vd D by the 9th resistance R9, the second end ground connection of the second resistance R2, second end of the first resistance R1, the first end of the second resistance R2 connect the first end of the tenth resistance R10 respectively, second end of the tenth resistance R10 connects the base stage of amplifying triode Q1, for amplifying triode Q1 provides bias voltage; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects the first end of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the first end of the tenth resistance R10, the second end ground connection of the first electric capacity C1;

Described detection module mainly comprises the first diode D1, the second diode D2, the 5th electric capacity C5, the 6th electric capacity C6; Wherein, the first end of the 5th electric capacity C5 connects second end of eddy current coil L1, and second end of the 5th electric capacity C5 connects the positive pole of the negative pole of the first diode D1, the second diode D2; The second end ground connection of the first diode D1, the negative pole of the second diode D2 connects the first end of the 6th electric capacity C6, the second end ground connection of the 6th electric capacity C6; First diode D1, the second diode D2 are switching tubes, and the 5th electric capacity C5 plays isolated DC effect, and the 6th electric capacity C6 strobes;

Described temperature compensation module comprises the 4th resistance R4, the 5th resistance R5, the 6th thermistor R6 of negative temperature coefficient, the 11 resistance R11, the 12 thermistor R12, the 13 resistance R13; The first end of described 4th resistance R4 connects the negative pole of the second diode D2, the first end of the 6th electric capacity C6, and second end of the 4th resistance R4 connects the first end of the 5th resistance R5; Second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the first end of the 11 resistance R11, the second end ground connection of the 6th thermistor R6; The second end branch of the 11 resistance R11 connects the first end of the 12 thermistor R12, the first end of the 13 resistance R13, second end of the 12 thermistor R12, the second end ground connection of the 13 resistance R13;

Described output buffer stage block comprises operational amplifier U1, the 7th resistance R7, the 8th resistance R8, the 14 resistance R14, the 15 resistance R15, the 9th electric capacity C9, the tenth electric capacity C10; Wherein, operational amplifier U1 mainly plays isolation features, other three parts exported in buffer stage block and current vortex circuit is kept apart; 7th resistance R7, the 8th resistance R8 are the negative-feedback circuits of operational amplifier U1; The positive pole of operational amplifier U1 connects second end of the 4th resistance R4, and the negative pole of operational amplifier U1 connects the first end of the 7th resistance R7, the second end ground connection of the 7th resistance R7; The output terminal of operational amplifier U1 connects second end of the 8th resistance R8, the first end of the 14 resistance R14, the negative pole of first end concatenation operation amplifier U1 of the 8th resistance R8, the first end of the 7th resistance R7; Second end of the 14 resistance R14 connects first end, the first end of the 15 resistance R15, the first end of the tenth electric capacity C10 of the 9th electric capacity C9 respectively, the second end ground connection of second end of the 9th electric capacity C9, second end of the 15 resistance R15, the tenth electric capacity C10;

Described temperature compensation module is in order to compensate amplifying triode Q1 and eddy-current coils L1; According to triode physical characteristics, triode along with temperature from low to high, the PN junction of triode narrows, then make triode times magnification factor beta increase; Amplifying triode Q1 along with temperature from low to high, the collector current of amplifying triode Q1 constantly increases, and finally causes the voltage signal of input amplifier U1 to increase along with temperature from low to high; Eddy-current coils L1 is because selection and its physical characteristics are along with exported the from low to high voltage signal of temperature is also in increase; And the 6th resistance R6 and the 12 resistance R12 is thermistor (NTC) in temperature-compensation circuit, along with temperature from low to high, the resistance of the 6th resistance R6 and the 12 resistance R12 is descending, causes the 6th resistance R6,11 resistance R11,12 resistance R12, the overall resistance of the resistor network that the 13 resistance R13 forms diminishes, because resistance diminishes, electric current is constant, according to U=IR, voltage signal then diminishes, and the voltage signal of input operational amplifier U1 just diminishes; Along with temperature from low to high, amplifying triode Q1 amplification coefficient becomes large, eddy-current coils L1 voltage signal that output characteristics causes becomes large, the voltage signal that simultaneous temperature compensating circuit adjusts diminishes, such voltage is increase tendency, a voltage is minimizing trend, mutually neutralizes counteracting between two, and the voltage signal temperature influence of the input operational amplifier U1 made and output reduces or not temperature influence; Otherwise, temperature from high to low, amplifying triode Q1 amplification coefficient reduces, eddy-current coils L1 exports and voltage signal is diminished, and thermistor resistance temperature step-down and resistance become and make greatly voltage signal become large, be still a voltage is increase tendency, a voltage is minimizing trend, mutually neutralize counteracting between two, voltage signal tends towards stability, and temperature influence diminishes.

As a preferred embodiment of the present invention, described temperature compensation module connection oscillator module, oscillator module, detection module, output buffer stage block connect successively;

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprises the first resistance R1, the 3rd resistance R3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, amplifying triode Q1, and eddy current coil L1; Described temperature compensation module connection oscillator module, temperature compensation module comprises the 6th thermistor R6 of the 5th resistance R5, negative temperature coefficient;

Wherein, the first end of the first resistance R1 connects power vd D, and second end of the first resistance R1 connects first end, the first end of the first electric capacity C1, the base stage of amplifying triode Q1 of the 5th resistance R5; Second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the second end ground connection of the 6th thermistor R6; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects first end, the power vd D of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the base stage of amplifying triode Q1, the second end ground connection of the first electric capacity C1;

Described output buffer stage block comprises operational amplifier U1, the 7th resistance R7, the 8th resistance R8, the 16 resistance R16, the 17 resistance R17; Wherein, operational amplifier U1 mainly plays isolation features, other three parts exported in buffer stage block and current vortex circuit is kept apart; 7th resistance R7, the 8th resistance R8 are the negative-feedback circuits of operational amplifier U1; The first end of the 16 resistance R16 connects the negative pole of the second diode D2, and second end of the 16 resistance R16 connects the first end of the 17 resistance R17, the positive pole of operational amplifier U1, the second end ground connection of the 17 resistance R17; The negative pole of operational amplifier U1 connects the first end of the 7th resistance R7, the second end ground connection of the 7th resistance R7; The output terminal of operational amplifier U1 connects second end of the 8th resistance R8, the negative pole of first end concatenation operation amplifier U1 of the 8th resistance R8, the first end of the 7th resistance R7.

As a preferred embodiment of the present invention, described oscillator module, detection module, output buffer stage block, temperature compensation module connect successively;

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprises the first resistance R1, the second resistance R2, the 3rd resistance R3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, amplifying triode Q1, and eddy current coil L1; Wherein, the first end of the first resistance R1 connects power vd D, the second end ground connection of the second resistance R2, and second end of the first resistance R1, the first end of the second resistance R2 connect the base stage of amplifying triode Q1, respectively for amplifying triode Q1 provides bias voltage; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects first end, the power vd D of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the base stage of amplifying triode Q1, the second end ground connection of the first electric capacity C1;

Described output buffer stage block comprises operational amplifier U1, the 7th resistance R7, the 8th resistance R8, the 16 resistance R16, the 17 resistance R17; Wherein, operational amplifier U1 mainly plays isolation features, other three parts exported in buffer stage block and current vortex circuit is kept apart; 7th resistance R7, the 8th resistance R8 are the negative-feedback circuits of operational amplifier U1; The first end of the 16 resistance R16 connects the negative pole of the second diode D2, and second end of the 16 resistance R16 connects the first end of the 17 resistance R17, the positive pole of operational amplifier U1, the second end ground connection of the 17 resistance R17; The negative pole of operational amplifier U1 connects the first end of the 7th resistance R7, the second end ground connection of the 7th resistance R7; The output terminal of operational amplifier U1 connects second end of the 8th resistance R8, the negative pole of first end concatenation operation amplifier U1 of the 8th resistance R8, the first end of the 7th resistance R7;

Described temperature compensation module comprises the 6th thermistor R6 of the 4th resistance R4, the 5th resistance R5, negative temperature coefficient; The output terminal of the first end concatenation operation amplifier U1 of described 4th resistance R4, second end of the 4th resistance R4 connects the first end of the 5th resistance R5, the signal output part of current vortex sensor; Second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the second end ground connection of the 6th thermistor R6.

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprises the first resistance R1, the second resistance R2, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, amplifying triode Q1, and eddy current coil L1; Described temperature compensation module connection oscillator module, temperature compensation module comprises the 6th thermistor R6 of the 5th resistance R5, negative temperature coefficient;

Wherein, the first end of the first resistance R1 connects power vd D, and second end of the first resistance R1 connects the first end of the second resistance R2, the first end of the first electric capacity C1, the base stage of amplifying triode Q1; The second end ground connection of the second resistance R2; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects first end, the power vd D of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; The emitter of amplifying triode Q1 connects the first end of the 5th resistance R5, and second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the second end ground connection of the 6th thermistor R6; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the base stage of amplifying triode Q1, the second end ground connection of the first electric capacity C1;

The beneficial effects of the utility model are: the railway switch machine indication rod gap width on-line real time monitoring system that the utility model proposes, system stability, reliability can be improved, make wrong report, rate of failing to report is down to zero, current vortex sensor reliable long-term working is good, highly sensitive simultaneously, resolution is high, fast response time, interference resistance by force, are not subject to the impact of the media such as greasy dirt, structure is simple, easy for installation, be applicable to various goat and can use under circumstances, possessing low cost, high-level efficiency, the feature that cannot solve many deficiencies at present can be solved.

The utility model by arranging thermistor (NTC) (as the 6th resistance R6 and the 12 resistance R12) in temperature-compensation circuit, according to triode physical characteristics, triode along with temperature from low to high, the PN junction of triode narrows, then make triode times magnification factor beta increase; Amplifying triode Q1 along with temperature from low to high, the collector current of amplifying triode Q1 constantly increases, and finally causes the voltage signal of input amplifier U1 to increase along with temperature from low to high.Eddy-current coils L1 is because selection and its physical characteristics are along with exported the from low to high voltage signal of temperature is also in increase.And the 6th resistance R6 and the 12 resistance R12 is thermistor (NTC) in temperature-compensation circuit, along with temperature from low to high, the resistance of the 6th resistance R6 and the 12 resistance R12 is descending, the overall resistance of the resistor network causing the 6th resistance R6, the 11 resistance R11, the 12 resistance R12, the 13 resistance R13 to form diminishes, because resistance diminishes, electric current is constant, according to U=IR, voltage signal then diminishes, and the voltage signal of input operational amplifier U1 just diminishes.Along with temperature from low to high, amplifying triode Q1 amplification coefficient becomes large, eddy-current coils L1 voltage signal that output characteristics causes becomes large, the voltage signal that simultaneous temperature compensating circuit adjusts diminishes, such voltage is increase tendency, a voltage is minimizing trend, mutually neutralizes counteracting between two, and the voltage signal temperature influence of the input operational amplifier U1 made and output reduces or not temperature influence.Otherwise, temperature from high to low, amplifying triode Q1 amplification coefficient reduces, eddy-current coils L1 exports and voltage signal is diminished, and thermistor resistance temperature step-down and resistance become and make greatly voltage signal become large, be still a voltage is increase tendency, a voltage is minimizing trend, mutually neutralize counteracting between two, voltage signal tends towards stability, and temperature influence diminishes.The utility model can improve the degree of accuracy of temperature compensation, improves the precision to gap width monitoring better.

The utility model can be suitable for various model goat, breach really can be quantized, and is equivalent to a milscale in real-time measurement; Degree of accuracy of the present utility model is high, and resolution can reach 0.01 millimeter, and precision also can reach 0.01 millimeter at normal temperatures.Meanwhile, the utility model monitoring system can the operationally state of various conversion and the action of real-time complete monitoring goat.The utility model also has the self-diagnostic function of equipment own, and any connecting line that centralized monitor is connected with collector and collector is connected with current vortex sensor interrupts self reporting to the police, and the fault of equipment own and element go bad and also can report to the police.Native system mentality of designing is that monitoring should not alarm set point, it not this alarm set point of monitoring, so for system itself, only have breach to be in normal position just not report to the police, other any states all can be reported to the police, and any connecting line that centralized monitor is connected with collector and collector is connected with current vortex sensor interrupts all can not meet breach is in entopic data.

In order to improve monitoring accuracy, reduce the error brought of temperature variation and improve monitoring distance, at of a goat breach, the above current vortex sensor of 2 covers can be installed.The data of 2 cover current vortex sensors can contrast, and the data if any 1 cover current vortex sensor are greater than the value of setting, will report to the police; Namely can not be greater than the certain limit of normal value, otherwise just belong to the fault of equipment own or the element of equipment own and go bad.

The utility model supervisory system can also with each Railway Bureau at present centralized signal supervision systems connection; And hand-held set can be configured realize real time monitoring function; In addition, the data transmission of the utility model monitoring system and power supply share a pair cable, save circuit.

Accompanying drawing explanation

Fig. 1 is the composition schematic diagram of the utility model on-line real time monitoring system.

Fig. 2 is the composition schematic diagram of collector in the utility model monitoring system.

Fig. 3 is the composition schematic diagram of Centralizing inspection manager in the utility model monitoring system.

Fig. 4 is the composition schematic diagram of wireless handset in the utility model monitoring system.

Fig. 5 is the circuit diagram of the utility model current vortex sensor in embodiment two.

Fig. 6 is the circuit diagram of the utility model current vortex sensor in embodiment three.

Fig. 7 is the circuit diagram of the utility model current vortex sensor in embodiment four.

Fig. 8 is the circuit diagram of the utility model current vortex sensor in embodiment five.

Fig. 9 is the circuit diagram of the utility model current vortex sensor in embodiment six.

Embodiment

Preferred embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.

Embodiment one

Refer to Fig. 1, the utility model discloses a kind of railway switch machine indication rod gap width on-line real time monitoring system, and described monitoring system comprises: current vortex sensor 10, collector 20, Centralizing inspection manager 30, remote monitoring center 40, wireless handset 50; Current vortex sensor 10, collector 20, Centralizing inspection manager 30, wireless handset 50 can be multiple usually.A collector 20 can connect multiple current vortex sensor 10, Centralizing inspection manager 30 and can connect multiple collector 20, and remote monitoring center 40 can connect one or more Centralizing inspection manager 30.

[current vortex sensor]

Current vortex sensor 10 as being that detection checks post and checks the gap between block breach.Current vortex sensor 10 comprises eddy current probe, current vortex circuit; Described eddy current probe, by checking post and checking that the gap between block breach converts current vortex signal to, exports after current vortex processing of circuit.

The principle of work of current vortex sensor 10 is: the high frequency oscillating current in current vortex sensor circuit flows into current vortex sensor probe coil, produces the magnetic field of alternation in the coil of current vortex sensor probe head.If there is breach one side (metallic conductor) checking block close in the effective range of this alternating magnetic field, then this magnetic field energy can total loss.Check in post when current vortex sensor probe is arranged on, suppose to check post and check the normal working clearance value that the breach of block is in track switch and specifies, then check that breach one side (metallic conductor) surface of block produces induction current at this, electromagnetics is referred to as current vortex.Meanwhile this current vortex field also produces the direction alternating magnetic field contrary with head coil direction, due to its retroaction, the amplitude of probe head coil high-frequency electric current and phase place are changed (virtual impedance of coil), this change with check breach one side (metallic conductor) magnetic permeability of block, conductivity, the geometric configuration of coil, physical dimension, power frequency and the probe head coil relating to parameters such as distance to the breach checking block simultaneously (metallic conductor).Usual supposition checks breach one side (metallic conductor) uniform in material of block and performance is linear and isotropic, then probe coil and check that the physical property of breach one side (metallic conductor) of block can by checking the conductivity of breach one side (metallic conductor) of block, magnetic permeability, size factor, probe head coil and checking that the distance of breach one side (metallic conductor) of block, strength of current and frequency parameter describe.Then coil characteristic impedance can use Z={ conductivity, magnetic permeability, size factor, probe head coil and the distance of breach one side checking block, strength of current, frequency } function represents.Usually we can accomplish to control conductivity, magnetic permeability, size factor, strength of current, these parameters of frequency are constant within the specific limits, then the characteristic impedance Z of coil just becomes probe head coil and the single-valued function of distance of breach one side checking block, although its whole function is one nonlinear, its Function feature is " S " type curve, but can choose it and be approximately linear one section.In this, by the process of current vortex sensor circuit, by the change of coil impedance Z, namely probe head coil and the change of the breach distance simultaneously checking block convert the change of voltage or electric current to.The size of output signal changes to the spacing of breach one side (metallic conductor) of tested inspection block with probe head, gap monitoring technology of eddy current sensor be exactly according to this principle realize to the breach checking block simultaneously (metallic conductor) displacement, vibrate isoparametric measurement.

The course of work of current vortex sensor 10 is: when tested inspection block breach one side (metallic conductor) and current vortex sensor pop one's head between (current vortex sensor is popped one's head in be arranged on and is checked in post, current vortex sensor probe head surface is concordant with that face of breach of inspection post corresponding inspection block) distance when changing, the virtual impedance of current vortex sensor probe coil also changes, the change of current vortex sensor probe coil virtual impedance causes the change of oscillating voltage amplitude, and this oscillating voltage with distance change is through detection, filtering, linear compensation, amplify normalization and convert voltage (electric current) change to, convert digital signal to through digital processing circuit again to export, finally complete mechanical shift (gap) and convert voltage (electric current) to.Make user can grasp the change of the clearance gaps numerical value of point machine breach inspection post and inspection block in real time by remote transmission, consider the impact of temperature on current vortex sensor, add temperature compensation function in circuit, make it can ensure gap numerical value output-consistence at-55 DEG C to 85 DEG C.

[collector]

Collector 20 connects one or more current vortex sensor 10, in order to gather the data that described current vortex sensor 10 exports.

Refer to Fig. 2, described collector 20 comprises first microprocessor 21, first power line carrier module 22, first wireless communication module 23, A/D acquisition module 24, first data memory module 25, first power module 26.Described first power line carrier module 22, first wireless communication module 23, A/D acquisition module 24, first data memory module 25, first power module 26 are connected with described first microprocessor 22 respectively; Described first power line carrier module 22 connects Centralizing inspection manager 30, and described A/D acquisition module 24 connects current vortex sensor 10.

[Centralizing inspection manager]

Centralizing inspection manager 30 connects one or more collector 20 by line of electric force, receives in power carrier mode the data that collector 20 collects.

Refer to Fig. 3, described Centralizing inspection manager comprises the second microprocessor 32, centralized displaying screen 31, second data memory module 35, second power line carrier module 34, second source module 37, second communication module 36, liquid crystal serial communication modular 33.

Described secondth data memory module 35, second power line carrier module 34, second source module 37, second communication module 36, liquid crystal serial communication modular 33 are connected with the second microprocessor 32 respectively, and liquid crystal serial communication modular 33 is also connected with centralized displaying screen 31.Described Centralizing inspection manager 30 connects remote monitoring center 40 by second communication module 36, connects collector 20 by the second power line carrier module 34.In the present embodiment, described second communication module 36 comprises RS485 serial port unit, RS422 serial port unit, tcp/ip communication unit.

[remote monitoring center]

Remote monitoring center 40 connects one or more Centralizing inspection manager 30, receives the data that described Centralizing inspection manager 30 sends.

[wireless handset]

Refer to Fig. 4, described wireless handset 50 comprises the 3rd microprocessor 51, the 3rd data memory module 54, the 3rd wireless communication module 52, LCD MODULE 56, the 3rd power module 53, input through keyboard module 55.Described 3rd data memory module 54, the 3rd wireless communication module 52, LCD MODULE 56, the 3rd power module 53, input through keyboard module 55 are connected with the 3rd microprocessor 51 respectively.Wireless handset 50 connects described collector 20 by the 3rd wireless communication module 52, obtains the data that collector 20 gathers.Its input through keyboard module (can certainly be other load modules) can also be passed through simultaneously and send control command to collector, management collector.

Embodiment two

Refer to Fig. 5, the difference of the present embodiment and embodiment one is, in the present embodiment, described current vortex sensor comprises: eddy current probe, current vortex circuit, and described eddy current probe is connected with current vortex circuit; Current vortex circuit comprises oscillator module, detection module, temperature compensation module, output buffer stage block.

Described current vortex sensor utilizes high frequency oscillating current to pass through eddy current probe, the magnetic field of alternation is produced at the head of eddy current probe, in the effective range of this alternating magnetic field, there is metallic conductor to move, magnetic field can be moved change with metal and change, thus this change is converted to voltage or curent change and be delivered to the collector module of monitoring system.

Described oscillator module is responsible for producing oscillator signal, and outputs to detection module; When receiving eddy current probe due to after metallic conductor moves the changes of magnetic field of generation, the alternating voltage amplitude of output is made to produce corresponding change.Described detection module becomes galvanic current to press signal in order to the ac voltage signal rectifying and wave-filtering exported by oscillator module.Described temperature compensation module is in order to compensate temperature.Described output buffer stage block exports in order to be amplified by the d. c. voltage signal of upper level.Described eddy current probe can adopt the coil around wide temperature FERRITE CORE.

Specifically as shown in Figure 5, described oscillator module mainly comprises the first resistance R1, the second resistance R2, the 3rd resistance R3, the 9th resistance R9, the tenth resistance R10, first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 7th electric capacity C7, the 8th electric capacity C8, amplifying triode Q1, and eddy current coil L1.Wherein, the first end of the 7th electric capacity C7 connects power vd D, the second end ground connection; The first end of the 8th electric capacity C8 connects power vd D by the 9th resistance R9, the second end ground connection.7th electric capacity C7 and the 8th electric capacity C8 and the 9th resistance R9 carries out filtering to power vd D; Tenth resistance R10 intensifier circuit stability action.The first end of the first resistance R1 connects power vd D, the second end ground connection of the second resistance R2, second end of the first resistance R1, the first end of the second resistance R2 connect the first end of the tenth resistance R10 respectively, second end of the tenth resistance R10 connects the base stage of amplifying triode Q1, for amplifying triode Q1 provides bias voltage.Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects the first end of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4.Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1.First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the first end of the tenth resistance R10, the second end ground connection of the first electric capacity C1.

Described detection module mainly comprises the first diode D1, the second diode D2, the 5th electric capacity C5, the 6th electric capacity C6.Wherein, the first end of the 5th electric capacity C5 connects second end of eddy current coil L1, and second end of the 5th electric capacity C5 connects the positive pole of the negative pole of the first diode D1, the second diode D2; The second end ground connection of the first diode D1, the negative pole of the second diode D2 connects the first end of the 6th electric capacity C6, the second end ground connection of the 6th electric capacity C6.First diode D1, the second diode D2 are switching tubes, and the 5th electric capacity C5 plays isolated DC effect, and the 6th electric capacity C6 strobes.

Described temperature compensation module comprises the 4th resistance R4, the 5th resistance R5, the 6th thermistor R6 of negative temperature coefficient, the 11 resistance, the 12 thermistor R12, the 13 resistance R13.The first end of described 4th resistance R4 connects the negative pole of the second diode D2, the first end of the 6th electric capacity C6, and second end of the 4th resistance R4 connects the first end of the 5th resistance R5; Second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the first end of the 11 resistance R11, the second end ground connection of the 6th thermistor R6; The second end branch of the 11 resistance R11 connects the first end of the 12 thermistor R12, the first end of the 13 resistance R13, second end of the 12 thermistor R12, the second end ground connection of the 13 resistance R13.

Described output buffer stage block comprises operational amplifier U1, the 7th resistance R7, the 8th resistance R8, the 14 resistance R14, the 15 resistance R15, the 9th electric capacity C9, the tenth electric capacity C10.Wherein, operational amplifier U1 mainly plays isolation features, other three parts exported in buffer stage block and current vortex circuit is kept apart; 7th resistance R7, the 8th resistance R8 are the negative-feedback circuits of operational amplifier U1.The positive pole of operational amplifier U1 connects second end of the 4th resistance R4, and the negative pole of operational amplifier U1 connects the first end of the 7th resistance R7, the second end ground connection of the 7th resistance R7; The output terminal of operational amplifier U1 connects second end of the 8th resistance R8, the first end of the 14 resistance R14, the negative pole of first end concatenation operation amplifier U1 of the 8th resistance R8, the first end of the 7th resistance R7; Second end of the 14 resistance R14 connects first end, the first end of the 15 resistance R15, the first end of the tenth electric capacity C10 of the 9th electric capacity C9 respectively, the second end ground connection of second end of the 9th electric capacity C9, second end of the 15 resistance R15, the tenth electric capacity C10.

Described temperature compensation module is in order to compensate amplifying triode Q1 and eddy-current coils L1.According to triode physical characteristics, triode along with temperature from low to high, the PN junction of triode narrows, then make triode times magnification factor beta increase; Amplifying triode Q1 along with temperature from low to high, the collector current of amplifying triode Q1 constantly increases, and finally causes the voltage signal of input amplifier U1 to increase along with temperature from low to high.Eddy-current coils L1 is because selection and its physical characteristics are along with exported the from low to high voltage signal of temperature is also in increase.And the 6th resistance R6 and the 12 resistance R12 is thermistor (NTC) in temperature-compensation circuit, along with temperature from low to high, the resistance of the 6th resistance R6 and the 12 resistance R12 is descending, the overall resistance of the resistor network causing the 6th resistance R6, the 11 resistance R11, the 12 resistance R12, the 13 resistance R13 to form diminishes, because resistance diminishes, electric current is constant, according to U=IR, voltage signal then diminishes, and the voltage signal of input operational amplifier U1 just diminishes.Along with temperature from low to high, amplifying triode Q1 amplification coefficient becomes large, eddy-current coils L1 voltage signal that output characteristics causes becomes large, the voltage signal that simultaneous temperature compensating circuit adjusts diminishes, such voltage is increase tendency, a voltage is minimizing trend, mutually neutralizes counteracting between two, and the voltage signal temperature influence of the input operational amplifier U1 made and output reduces or not temperature influence.Otherwise, temperature from high to low, amplifying triode Q1 amplification coefficient reduces, eddy-current coils L1 exports and voltage signal is diminished, and thermistor resistance temperature step-down and resistance become and make greatly voltage signal become large, be still a voltage is increase tendency, a voltage is minimizing trend, mutually neutralize counteracting between two, voltage signal tends towards stability, and temperature influence diminishes.Utilize two thermistor NTC (certainly can adopt more thermistor NTC as required) by the program, the degree of accuracy of temperature compensation can be improved further, improve the precision to gap width monitoring better.

Embodiment three

Refer to Fig. 6, the difference of the present embodiment and embodiment two is, in the present embodiment, described oscillator module, detection module, temperature compensation module, output buffer stage block connect successively.

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprises the first resistance R1, the second resistance R2, the 3rd resistance R3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, amplifying triode Q1, and eddy current coil L1; Wherein, the first end of the first resistance R1 connects power vd D, the second end ground connection of the second resistance R2, and second end of the first resistance R1, the first end of the second resistance R2 connect the base stage of amplifying triode Q1, respectively for amplifying triode Q1 provides bias voltage; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects first end, the power vd D of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the base stage of amplifying triode Q1, the second end ground connection of the first electric capacity C1.

Described detection module mainly comprises the first diode D1, the second diode D2, the 5th electric capacity C5, the 6th electric capacity C6; Wherein, the first end of the 5th electric capacity C5 connects second end of eddy current coil L1, and second end of the 5th electric capacity C5 connects the positive pole of the negative pole of the first diode D1, the second diode D2; The second end ground connection of the first diode D1, the negative pole of the second diode D2 connects the first end of the 6th electric capacity C6, the second end ground connection of the 6th electric capacity C6; First diode D1, the second diode D2 are switching tubes, and the 5th electric capacity C5 plays isolated DC effect, and the 6th electric capacity C6 strobes.

Described temperature compensation module comprises the 6th thermistor R6 of the 4th resistance R4, the 5th resistance R5, negative temperature coefficient; The first end of described 4th resistance R4 connects the negative pole of the second diode D2, the first end of the 6th electric capacity C6, and second end of the 4th resistance R4 connects the first end of the 5th resistance R5; Second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the second end ground connection of the 6th thermistor R6.

Described output buffer stage block comprises operational amplifier U1, the 7th resistance R7, the 8th resistance R8; Wherein, operational amplifier U1 mainly plays isolation features, other three parts exported in buffer stage block and current vortex circuit is kept apart; 7th resistance R7, the 8th resistance R8 are the negative-feedback circuits of operational amplifier U1; The positive pole of operational amplifier U1 connects second end of the 4th resistance R4, and the negative pole of operational amplifier U1 connects the first end of the 7th resistance R7, the second end ground connection of the 7th resistance R7; The output terminal of operational amplifier U1 connects second end of the 8th resistance R8, the negative pole of first end concatenation operation amplifier U1 of the 8th resistance R8, the first end of the 7th resistance R7.

Embodiment four

Refer to Fig. 7, the difference of the present embodiment and embodiment two is, in the present embodiment, described temperature compensation module connection oscillator module, oscillator module, detection module, output buffer stage block connect successively.

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprises the first resistance R1, the 3rd resistance R3, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, amplifying triode Q1, and eddy current coil L1; Described temperature compensation module connection oscillator module, temperature compensation module comprises the 6th thermistor R6 of the 5th resistance R5, negative temperature coefficient.

Wherein, the first end of the first resistance R1 connects power vd D, and second end of the first resistance R1 connects first end, the first end of the first electric capacity C1, the base stage of amplifying triode Q1 of the 5th resistance R5; Second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the second end ground connection of the 6th thermistor R6; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects first end, the power vd D of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the base stage of amplifying triode Q1, the second end ground connection of the first electric capacity C1.

Embodiment five

Refer to Fig. 8, the difference of the present embodiment and embodiment two is, in the present embodiment, described oscillator module, detection module, output buffer stage block, temperature compensation module connect successively.

Embodiment six

Refer to Fig. 9, the difference of the present embodiment and embodiment two is, in the present embodiment, described temperature compensation module connection oscillator module, oscillator module, detection module, output buffer stage block connect successively.

Described oscillator module adopts capacitance connecting three point type oscillator principle, mainly comprises the first resistance R1, the second resistance R2, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, amplifying triode Q1, and eddy current coil L1; Described temperature compensation module connection oscillator module, temperature compensation module comprises the 6th thermistor R6 of the 5th resistance R5, negative temperature coefficient.

Wherein, the first end of the first resistance R1 connects power vd D, and second end of the first resistance R1 connects the first end of the second resistance R2, the first end of the first electric capacity C1, the base stage of amplifying triode Q1; The second end ground connection of the second resistance R2; Second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, eddy current coil L1 form bikini oscillatory circuit; The first end of the second electric capacity connects first end, the power vd D of eddy current coil L1, and second end of the second electric capacity C2 connects the collector of amplifying triode Q1; The first end of the 3rd electric capacity C3 connects second end of eddy current coil L1, and second end of the 3rd electric capacity C3, the first end of the 4th electric capacity C4 connect the emitter of amplifying triode Q1, the second end ground connection of the 4th electric capacity C4; The emitter of amplifying triode Q1 connects the first end of the 5th resistance R5, and second end of the 5th resistance R5 connects the first end of the 6th thermistor R6, the second end ground connection of the 6th thermistor R6; Amplifying triode Q1 plays a part to amplify oscillator signal; The first end of the 3rd resistance R3 connects the emitter of amplifying triode Q1, as the operating load of amplifying triode Q1; First electric capacity C1 is shunt capacitance, and the first end of the first electric capacity C1 connects the base stage of amplifying triode Q1, the second end ground connection of the first electric capacity C1.

In sum, the railway switch machine indication rod gap width on-line real time monitoring system that the utility model proposes, system stability, reliability can be improved, make wrong report, rate of failing to report is down to zero, current vortex sensor reliable long-term working is good, highly sensitive simultaneously, resolution is high, fast response time, interference resistance by force, are not subject to the impact of the media such as greasy dirt, structure is simple, easy for installation, be applicable to various goat and can use under circumstances, possessing low cost, high-level efficiency, the feature that cannot solve many deficiencies at present can be solved.

Here description of the present utility model and application is illustrative, not wants by scope restriction of the present utility model in the above-described embodiments.Distortion and the change of embodiment disclosed are here possible, are known for the replacement of embodiment those those of ordinary skill in the art and the various parts of equivalence.Those skilled in the art are noted that when not departing from spirit of the present utility model or essential characteristic, the utility model can in other forms, structure, layout, ratio, and to realize with other assembly, material and parts.When not departing from the utility model scope and spirit, can other distortion be carried out here to disclosed embodiment and change.

Claims

1. a point machine indication rod gap width on-line real time monitoring system, is characterized in that, described monitoring system comprises:

Collector, connects one or more current vortex sensor, in order to gather the data that described current vortex sensor exports;

2. point machine indication rod gap width on-line real time monitoring system according to claim 1, is characterized in that:

Described collector comprises first microprocessor, the first wireless communication module, the first data memory module, A/D acquisition module, the first power line carrier module, the first power module;

3. point machine indication rod gap width on-line real time monitoring system according to claim 1, is characterized in that:

Described Centralizing inspection manager comprises the second microprocessor, the second data memory module, the second power line carrier module, second source module, second communication module, liquid crystal serial communication modular, centralized displaying screen;

4. point machine indication rod gap width on-line real time monitoring system according to claim 1, is characterized in that:

Described monitoring system also comprises one or more wireless handset, and wireless handset is provided with the 3rd wireless communication module, connects described collector by the 3rd wireless communication module, obtains the data that collector gathers; In order to show in real time nick translation change, goat new clothes, replacing, maintenance, repair, patrol and examine time ancillary staff adjust notch state; Send control command by its load module to collector, management collector simultaneously.

5. point machine indication rod gap width on-line real time monitoring system according to claim 4, is characterized in that:

Described wireless handset comprises the 3rd microprocessor, the 3rd data memory module, the 3rd wireless communication module, the 3rd LCD MODULE, the 3rd power module, input through keyboard module;

6. point machine indication rod gap width on-line real time monitoring system according to claim 1, is characterized in that:

Described eddy current probe is connected with current vortex circuit; Current vortex circuit comprises oscillator module, detection module, temperature compensation module, output buffer stage block;

7. point machine indication rod gap width on-line real time monitoring system according to claim 6, is characterized in that:

Described eddy current probe adopts the coil around wide temperature FERRITE CORE;

Described output buffer stage block comprises operational amplifier U1, the 7th resistance R7, the 8th resistance R8, the 14 resistance R14, the 15 resistance R15, the 9th electric capacity C9, the tenth electric capacity C10; Wherein, operational amplifier U1 mainly plays isolation features, other three parts exported in buffer stage block and current vortex circuit is kept apart; 7th resistance R7, the 8th resistance R8 are the negative-feedback circuits of operational amplifier U1; The positive pole of operational amplifier U1 connects second end of the 4th resistance R4, and the negative pole of operational amplifier U1 connects the first end of the 7th resistance R7, the second end ground connection of the 7th resistance R7; The output terminal of operational amplifier U1 connects second end of the 8th resistance R8, the first end of the 14 resistance R14, the negative pole of first end concatenation operation amplifier U1 of the 8th resistance R8, the first end of the 7th resistance R7; Second end of the 14 resistance R14 connects first end, the first end of the 15 resistance R15, the first end of the tenth electric capacity C10 of the 9th electric capacity C9 respectively, the second end ground connection of second end of the 9th electric capacity C9, second end of the 15 resistance R15, the tenth electric capacity C10.

8. point machine indication rod gap width on-line real time monitoring system according to claim 6, is characterized in that:

Described temperature compensation module connection oscillator module, oscillator module, detection module, output buffer stage block connect successively;

9. point machine indication rod gap width on-line real time monitoring system according to claim 6, is characterized in that:

Described oscillator module, detection module, output buffer stage block, temperature compensation module connect successively;

10. point machine indication rod gap width on-line real time monitoring system according to claim 6, is characterized in that: